The coding system is based on that used in Nineteenth Century Norfolk Stained Glass by Birkin Haward.
All windows are numbered consecutively from east to west in any north or south facing wall and
from the centre outwards in any east or west facing wall. Windows of 2 and 3 lancet lights
are shown as 2 and 3 light.
A plan and key from the book by Birkin Haward is shown below.

Dates

In the column headed date, the date (without a + sign) is the date the window was made.
In that column and in the column headed Memorial a date prefixed by a + sign is the date of death
commemorated in the window.

Firms / Designers

The booklet Stained Glass Marks & Monographs published by NADFAS, 8 Guilford Street, London, WC1N 1DA
provides details of makers’ signatures and marks and short biographical information
on many designers and firms.

Main subjects

A reasonably comprehensive listing of subjects is provided, except in cases where there are many small scenes
or many saints, particularly if the windows are high up.
For reasons of space, the title ‘Saint’ has often been omitted, most commonly
in 4 evangelist windows.